Archery bow



July 22, 1958 w. M. FOLBERTH 2,844,136

ARCHERY BOW Filed Aug. 13, 1956 WillzkwMIb/arib flit ,5

United States Patent ARCHERY BOW William M. Folberth, Cleveland, Ohio, assignor to Bear Archery Company, Grayling, Mich., a corporation of Michigan Application August 13, 1956, Serial No. 603,593

11 Claims. (Cl. 124-23) This invention relates to archery bows of the type in which the loops at the end of the bow string are replaced -by heads fitting into recesses in the ends of the bow, ob-

jects of the invention being to facilitate bracing and unbracing in bows of this type andtominimize the weight of the bows.

According to the present invention the bow is provided with an elastic cord or other elongate stretchable means to eject one of the aforesaid heads from its recess in unbracing the bow. To return the head to the recess in bracing, the bow is preferably provided with elastic means having one end attached to the head and extending from the head toward the adjacent end of the bow to maintain the string taut when the bow is unbraced. Preferably the aforesaid elastic cord is settable to two positions in one of which it snaps the head out of the recess in unbracing and the other of which it permits the head to enter the recess in bracing the bow. In the preferred embodiment the recess for the head extends throughout the full width of the bow, the aforesaid head is elongate, it projects from both ends of the recess and the elastic cord is engageable under the projecting ends of the head to snap it out of the recess in unbracing the bow. Preferably the elastic cord is in the form of a loop extending forwardly under the projecting ends of the head and thence looping over the forward face of the bow, the loop being movable from a position at the end of the bow where it tends to snap the head out of the recess in unbracing the bow to a-retracted position where it permits the head to enter the recess in bracing the bow.

For the purpose of illustration typical embodiments of the invention are shown in the accompanying drawings in which Fig. 1 is a side elevation of the bow;

Fig. 2 is a rear elevation;

Fig. 3 is an enlarged side elevation of one end of the bow when the bow is braced and the elastic-cord ejector is in retracted position;

Fig. 4 is a similar view with the ejector moved to operative position;

Fig 5 is a similar view showing the head being ejected in unbracing the bow;

Fig. 6 is a similar view showing the bow in unbraced condition;

Fig. 7 is a similar view showing the ejector moved back to retracted position preparatory to bracing the bow;

Fig. 8 is a view from the line 88 of Fig. 4;

Fig. 9 is a section on line 99 of Fig. 8; and

Fig. 10 is a rear view of one end of a modified bow.

While the present invention is applicable to bows of many types it is illustrated as applied to a bow of the type shown in Fig. 1 in which the bow is indicated at 1 and the string at 2. As shown in the other figures the rear face of the bow is provided with a recess 3 extending transversely from side toside. Extending from the center of this recess toward the opposite end of the bow is a groove 4 to accommodate the string when the bow is braced. Seated in the recess 3 is a cylindrical head 6 Patented July 22, 1958 to the center of which the string 2 is attached. Extending from the recess 3 to the rear face of the bow is a mouth through which the head may be removed from the recess when tension on the string is relieved in unbracing the bow. As shown in Figs. 3 to 7 the recess slopes upwardly toward the rear face of the how so that there is no tendency for the head to slip out of the recess when the bow is braced.

The end of the bow is provided with a groove 8 through which extends an elastic cord 11 with one end fastened to the center of the head and the other end fastened to the front of the bow at 12 (Fig. 1). A tubular guard 13 may be disposed over the lower end of the cord.

As shown in Figs. 8 and 9 the ends of the head 6 projectbeyond the sides of the bow. Also projecting from the sides of the bow, immediately below and behind the projecting ends of the head, are lugs 14 which may comprise the ends of a pin fast in an opening extending through the bow. Extending through an opening 15 in the bow and looping over the lugs 14 and thence around the front of the bow is an elastic cord 16 having its ends joined together at 17 to form an endless loop. Located in the tipof the bow is a notch 18 in which the knotted end of the loop may be seated when moved from the retracted position shown in Fig. 3 to the operative position shown in Fig. 4.' V

The operation of the bow is as follows. When the bow is braced in normal operation the parts are in the position shown in Fig. 3. ,To unbrace the bow the knotted end of the loop is moved to the position shown in Fig. 4 where it tends to eject the head 6 from the recess 3. Then when the bow isflexed to unbrace the elastic cord automatically snaps the head 6 out to the position shown in Fig. 5. Whenthef bow is allowed to straighten again the head 6 slides down the rear face of the bow to the position shown in Fig. 6. This increases the tension in the elastic cord ll to hold the string taut while the bow is unbraced. To bracethe bow the loop 16 is moved back to the position shown in Fig. 7. Then when the bow is flexed in bracing the elasticcord 11 pulls theihead 6 from the position shown in Fig. 7 back to the position shown in Fig. 2, the head snapping back into the recess because the loop 16 is in retractedposition.

The modification shown in Fig. 10 differs from the aforesaid illustration in the addition of the pulley 18 in the groove 8 to reduce the friction on the elastic part 11.

It shouldbe understoodthat the present disclosure is for the purpose of illustration only and that this invention includes all modifications and equivalents which fall within the scope of the appended claims.

I claim:

1 1. An archery bow characterized in that the string has a head on one end which is wider than the string, one end of the bow has a recess in its rear side to receive the head and a groove leading from the recess toward the other end of the bow along the rear side of the bow to receive the string, the groove being narrower than the head so thatthe head cannot pull out through the groove when the bow is braced, the mouth of the recess being larger than the head, the bow having a bearing disposed rearwardlyof the recess, and an elastic cord extending forwardly from said bearing in front of said head under tension to snap the head out of the recess in unbracing the bow.

2. An archery bow characterized in that the string has a head on one end which is wider than the string, oneend of the bow has a recess in its rear side to receive the head and a groove leading from the recess toward the other end of the bow along the rear side of the bow to receivethe string, the groove being narrowerthan the head so that the head cannot pull out through the groove when the bow is braced, the mouth of the recess being larger than the head, elastic means having one end attached to the head and extending from the head toward the adjacent end of the bow in alignment with said groove to maintain the string taut when the bow is unbraced, the bow having a bearing disposed rearwardly of the recess, and an elastic cord extending forwardly from said bearing in front of said head under tension to snap the head out of the recess in unbracing the bow.

3. An archery bow characterized in that the string has a head on one end which is wider than the string, one end of the bow has a recess in its rear side to receive the head and a groove leading from the recess toward the other end of the bow along the rear side of the bow to receive the string, the groove being narrower than the head so that the head cannot pull out through the groove when the bow is braced, the mouth of the recess being larger than the head, the bow having a bearing disposed rearwardly of the recess, and an elastic cord extending forwardly from said bearing in front of said head under tension to snap the head out of the recess in unbracing the bow, the portion of the cord engageable with said bearing being movable from the bearing to a position forwardly of the recess so as not to resist movement of said head into the recess in rebracing the bow.

4. An archery bow characterized in that the string has a head on one end which is wider than the string, one end of the bow has a recess in its rear side to receive the head and a groove leading from the recess toward the other end of the bow along the rear side' of the bow to receive the string, the groove being narrower than the head so that the head cannot pull out through the groove when the bow is braced, the mouth of the recess being larger than the head, elastic means having one end attached to the head and extending from the head toward the adjacent end of the bow in alignment with said groove and thence over a guide at said end and along the front side of the bow to maintain the string taut when the bow is unbraced, and elastic cord for controlling the movement of the head, the cord being settable to two positions in one of which it snaps the head out of the recess in unbracing and the other of which it permits thehead to enter the recess in bracing the bow.

5. An archery bow having at one end a recess in its rear face extending from side to side, a groove leading from the recess toward the other end of the bow along said rear face, in said recess an elongate head extending transversely of the bow, the bow string being attached to the head intermediate its ends and lying in said groove when the bow is braced, one end of said head projecting from the recess, the bow having a bearing disposed rearwardly of the recess, and an elastic cord extending forwardly from said bearing in front of said projecting end under tension to snap the head out of the recess in unbracing the bow.

6. An archery bow having at one end a recess in its rear face extending from side to side, a groove leading from the recess toward the other end of the bow along said rear face, in said recess an elongate head extending transversely of the bow, the bow string being attached to the head intermediate its ends and lying in said groove when the bow is braced, said head projecting from both ends of the recess, the bow having a bearing disposed rearwardly of the recess, and an elastic cord extending forwardly from said bearing in front of said projecting ends under tension to snap the head out of the recess in unbracing the bow.

7. An archery bow having at one end a'recess in its rear face extending from side to side, a groove leading from the recess toward the other end of the bow along said rear face, in said recess an elongate head extending transversely of the bow, the bow string being attached to the head intermediate its ends and lying in said groove when the bow is braced, said head projecting from both ends of the recess and an elastic loop extending forwardly under the projecting ends of the head and thence looping over the forward face of the bow, the loop being movable from a position at the end of the bow where it tends to snap the head out of the recess in unbracing the bow to a retracted position where it permits the head to enter the recess in bracing the bow.

8. An archery bow having at one end a recess in its rear face extending fromside to side, a groove leading from the recess toward the other end of the bow along said rear face, in said recess an elongate head extending transversely of the bow, the bow string being attached to the head intermediate its ends and lying in said groove when the bow is braced, one end of said head projecting from the recess, the bow having bearings disposed rearwardly of the recess on opposite sides of the recess, and elastic cord extending from one bearing forwardly to the front side of said projecting end and thence rearwardly to the other bearing under tension to snap the head out of the recess in unbracing the bow.

9. An archery bow having at one end a recess in its rear face extending from side to side, a groove leading from the recess toward the other end of the bow along said rear face, in said recess an elongate head extending transversely of the bow, the bow string being attached to the head intermediate its ends and lying in said groove when the bow is braced, said head projecting from both ends of the recess, the bow having bearings disposed rearwardly of the recess on opposite sides of the recess, and elastic cord extending from one bearing forwardly to the front side of said projecting ends and thence rearwardly to the other bearing under tension to snap the head out of the recess in unbracing the bow.

10. An archery bow having at one end a recess in its rear face extending from side to side, a groove leading from the recess toward the other end of the bow along said rear face, in said recess an elongate head extending transversely of the bow, the bow string being attached to the head intermediate its ends and lying in said groove when the bow is braced, one end of said head projecting from the recess, the bow having bearings disposed on opposite sides of the recess lengthwise of the bow, at least one of the bearings being disposed rearwardly of the recess, and elastic cord extending from said one bearing forwardly to the front side of said projecting end and thence to the other bearing under tension to snap the head out of the recess in unbracing the bow.

11. An archery bow having at one end a recess in its rear face extending from side to side, a groove leading from the recess toward the other end of the bow along said rear face, in said recess an elongate head extending transversely of the bow, the bow string being attached to the head intermediate its ends and lying in said groove when the bow is braced, said head projecting from both ends of the recess, the bow having bearings disposed on opposite sides of the recess lengthwise of the bow, at least one of the bearings being disposed rearwardly of the recess, and elastic cord extending from'said one hearing forwardly to the front side of said projecting ends and thence to the other bearing under tension to snap the head out of the recess in unbracing the bow.

References Cited in the file of this patent UNITED STATES PATENTS 484,899 Lynch Oct. 25, 1892 561,855 Baptist June 9, 1896 1,391,457 Buckley et al. Sept. 20, 1921 2,307,021 Cordrey et al. Jan. 5, 1943 2,370,783 Dritz Mar. 6, 1945 2,591,925 Erbe Apr. 8, 1952 2,689,559 Meyer Sept. 21, 1954 

